ext/googletest/googletest/include/gtest/internal/gtest-death-test-internal.h - testing/jenkins-gem5-prod - Git at Google

 // Copyright 2005, Google Inc.
 // All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 // notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 // copyright notice, this list of conditions and the following disclaimer
 // in the documentation and/or other materials provided with the
 // distribution.
 //     * Neither the name of Google Inc. nor the names of its
 // contributors may be used to endorse or promote products derived from
 // this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 //
 // Authors: wan@google.com (Zhanyong Wan), eefacm@gmail.com (Sean Mcafee)
 //
 // The Google C++ Testing Framework (Google Test)
 //
 // This header file defines internal utilities needed for implementing
 // death tests.  They are subject to change without notice.

 #ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
 #define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_

 #include "gtest/internal/gtest-internal.h"

 #include <stdio.h>

 namespace testing {
 namespace internal {

 GTEST_DECLARE_string_(internal_run_death_test);

 // Names of the flags (needed for parsing Google Test flags).
 const char kDeathTestStyleFlag[] = "death_test_style";
 const char kDeathTestUseFork[] = "death_test_use_fork";
 const char kInternalRunDeathTestFlag[] = "internal_run_death_test";

 #if GTEST_HAS_DEATH_TEST

 // DeathTest is a class that hides much of the complexity of the
 // GTEST_DEATH_TEST_ macro.  It is abstract; its static Create method
 // returns a concrete class that depends on the prevailing death test
 // style, as defined by the --gtest_death_test_style and/or
 // --gtest_internal_run_death_test flags.

 // In describing the results of death tests, these terms are used with
 // the corresponding definitions:
 //
 // exit status:  The integer exit information in the format specified
 //               by wait(2)
 // exit code:    The integer code passed to exit(3), _exit(2), or
 //               returned from main()
 class GTEST_API_ DeathTest {
  public:
   // Create returns false if there was an error determining the
   // appropriate action to take for the current death test; for example,
   // if the gtest_death_test_style flag is set to an invalid value.
   // The LastMessage method will return a more detailed message in that
   // case.  Otherwise, the DeathTest pointer pointed to by the "test"
   // argument is set.  If the death test should be skipped, the pointer
   // is set to NULL; otherwise, it is set to the address of a new concrete
   // DeathTest object that controls the execution of the current test.
   static bool Create(const char* statement, const RE* regex,
                      const char* file, int line, DeathTest** test);
   DeathTest();
   virtual ~DeathTest() { }

   // A helper class that aborts a death test when it's deleted.
   class ReturnSentinel {
    public:
     explicit ReturnSentinel(DeathTest* test) : test_(test) { }
     ~ReturnSentinel() { test_->Abort(TEST_ENCOUNTERED_RETURN_STATEMENT); }
    private:
     DeathTest* const test_;
     GTEST_DISALLOW_COPY_AND_ASSIGN_(ReturnSentinel);
   } GTEST_ATTRIBUTE_UNUSED_;

   // An enumeration of possible roles that may be taken when a death
   // test is encountered.  EXECUTE means that the death test logic should
   // be executed immediately.  OVERSEE means that the program should prepare
   // the appropriate environment for a child process to execute the death
   // test, then wait for it to complete.
   enum TestRole { OVERSEE_TEST, EXECUTE_TEST };

   // An enumeration of the three reasons that a test might be aborted.
   enum AbortReason {
     TEST_ENCOUNTERED_RETURN_STATEMENT,
     TEST_THREW_EXCEPTION,
     TEST_DID_NOT_DIE
   };

   // Assumes one of the above roles.
   virtual TestRole AssumeRole() = 0;

   // Waits for the death test to finish and returns its status.
   virtual int Wait() = 0;

   // Returns true if the death test passed; that is, the test process
   // exited during the test, its exit status matches a user-supplied
   // predicate, and its stderr output matches a user-supplied regular
   // expression.
   // The user-supplied predicate may be a macro expression rather
   // than a function pointer or functor, or else Wait and Passed could
   // be combined.
   virtual bool Passed(bool exit_status_ok) = 0;

   // Signals that the death test did not die as expected.
   virtual void Abort(AbortReason reason) = 0;

   // Returns a human-readable outcome message regarding the outcome of
   // the last death test.
   static const char* LastMessage();

   static void set_last_death_test_message(const std::string& message);

  private:
   // A string containing a description of the outcome of the last death test.
   static std::string last_death_test_message_;

   GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
 };

 // Factory interface for death tests.  May be mocked out for testing.
 class DeathTestFactory {
  public:
   virtual ~DeathTestFactory() { }
   virtual bool Create(const char* statement, const RE* regex,
                       const char* file, int line, DeathTest** test) = 0;
 };

 // A concrete DeathTestFactory implementation for normal use.
 class DefaultDeathTestFactory : public DeathTestFactory {
  public:
   virtual bool Create(const char* statement, const RE* regex,
                       const char* file, int line, DeathTest** test);
 };

 // Returns true if exit_status describes a process that was terminated
 // by a signal, or exited normally with a nonzero exit code.
 GTEST_API_ bool ExitedUnsuccessfully(int exit_status);

 // Traps C++ exceptions escaping statement and reports them as test
 // failures. Note that trapping SEH exceptions is not implemented here.
 # if GTEST_HAS_EXCEPTIONS
 #  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
   try { \
     GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
   } catch (const ::std::exception& gtest_exception) { \
     fprintf(\
         stderr, \
         "\n%s: Caught std::exception-derived exception escaping the " \
         "death test statement. Exception message: %s\n", \
         ::testing::internal::FormatFileLocation(__FILE__, __LINE__).c_str(), \
         gtest_exception.what()); \
     fflush(stderr); \
     death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
   } catch (...) { \
     death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
   }

 # else
 #  define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
   GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)

 # endif

 // This macro is for implementing ASSERT_DEATH*, EXPECT_DEATH*,
 // ASSERT_EXIT*, and EXPECT_EXIT*.
 # define GTEST_DEATH_TEST_(statement, predicate, regex, fail) \
   GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
   if (::testing::internal::AlwaysTrue()) { \
     const ::testing::internal::RE& gtest_regex = (regex); \
     ::testing::internal::DeathTest* gtest_dt; \
     if (!::testing::internal::DeathTest::Create(#statement, &gtest_regex, \
         __FILE__, __LINE__, &gtest_dt)) { \
       goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
     } \
     if (gtest_dt != NULL) { \
       ::testing::internal::scoped_ptr< ::testing::internal::DeathTest> \
           gtest_dt_ptr(gtest_dt); \
       switch (gtest_dt->AssumeRole()) { \
         case ::testing::internal::DeathTest::OVERSEE_TEST: \
           if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) { \
             goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
           } \
           break; \
         case ::testing::internal::DeathTest::EXECUTE_TEST: { \
           ::testing::internal::DeathTest::ReturnSentinel \
               gtest_sentinel(gtest_dt); \
           GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt); \
           gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE); \
           break; \
         } \
         default: \
           break; \
       } \
     } \
   } else \
     GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__): \
       fail(::testing::internal::DeathTest::LastMessage())
 // The symbol "fail" here expands to something into which a message
 // can be streamed.

 // This macro is for implementing ASSERT/EXPECT_DEBUG_DEATH when compiled in
 // NDEBUG mode. In this case we need the statements to be executed, the regex is
 // ignored, and the macro must accept a streamed message even though the message
 // is never printed.
 # define GTEST_EXECUTE_STATEMENT_(statement, regex) \
   GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
   if (::testing::internal::AlwaysTrue()) { \
      GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
   } else \
     ::testing::Message()

 // A class representing the parsed contents of the
 // --gtest_internal_run_death_test flag, as it existed when
 // RUN_ALL_TESTS was called.
 class InternalRunDeathTestFlag {
  public:
   InternalRunDeathTestFlag(const std::string& a_file,
                            int a_line,
                            int an_index,
                            int a_write_fd)
       : file_(a_file), line_(a_line), index_(an_index),
         write_fd_(a_write_fd) {}

   ~InternalRunDeathTestFlag() {
     if (write_fd_ >= 0)
       posix::Close(write_fd_);
   }

   const std::string& file() const { return file_; }
   int line() const { return line_; }
   int index() const { return index_; }
   int write_fd() const { return write_fd_; }

  private:
   std::string file_;
   int line_;
   int index_;
   int write_fd_;

   GTEST_DISALLOW_COPY_AND_ASSIGN_(InternalRunDeathTestFlag);
 };

 // Returns a newly created InternalRunDeathTestFlag object with fields
 // initialized from the GTEST_FLAG(internal_run_death_test) flag if
 // the flag is specified; otherwise returns NULL.
 InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag();

 #else  // GTEST_HAS_DEATH_TEST

 // This macro is used for implementing macros such as
 // EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED on systems where
 // death tests are not supported. Those macros must compile on such systems
 // iff EXPECT_DEATH and ASSERT_DEATH compile with the same parameters on
 // systems that support death tests. This allows one to write such a macro
 // on a system that does not support death tests and be sure that it will
 // compile on a death-test supporting system.
 //
 // Parameters:
 //   statement -  A statement that a macro such as EXPECT_DEATH would test
 //                for program termination. This macro has to make sure this
 //                statement is compiled but not executed, to ensure that
 //                EXPECT_DEATH_IF_SUPPORTED compiles with a certain
 //                parameter iff EXPECT_DEATH compiles with it.
 //   regex     -  A regex that a macro such as EXPECT_DEATH would use to test
 //                the output of statement.  This parameter has to be
 //                compiled but not evaluated by this macro, to ensure that
 //                this macro only accepts expressions that a macro such as
 //                EXPECT_DEATH would accept.
 //   terminator - Must be an empty statement for EXPECT_DEATH_IF_SUPPORTED
 //                and a return statement for ASSERT_DEATH_IF_SUPPORTED.
 //                This ensures that ASSERT_DEATH_IF_SUPPORTED will not
 //                compile inside functions where ASSERT_DEATH doesn't
 //                compile.
 //
 //  The branch that has an always false condition is used to ensure that
 //  statement and regex are compiled (and thus syntactically correct) but
 //  never executed. The unreachable code macro protects the terminator
 //  statement from generating an 'unreachable code' warning in case
 //  statement unconditionally returns or throws. The Message constructor at
 //  the end allows the syntax of streaming additional messages into the
 //  macro, for compilational compatibility with EXPECT_DEATH/ASSERT_DEATH.
 # define GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, terminator) \
     GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
     if (::testing::internal::AlwaysTrue()) { \
       GTEST_LOG_(WARNING) \
           << "Death tests are not supported on this platform.\n" \
           << "Statement '" #statement "' cannot be verified."; \
     } else if (::testing::internal::AlwaysFalse()) { \
       ::testing::internal::RE::PartialMatch(".*", (regex)); \
       GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
       terminator; \
     } else \
       ::testing::Message()

 #endif  // GTEST_HAS_DEATH_TEST

 }  // namespace internal
 }  // namespace testing

 #endif  // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
	// Copyright 2005, Google Inc.
	// All rights reserved.
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are
	// met:
	//
	// * Redistributions of source code must retain the above copyright
	// notice, this list of conditions and the following disclaimer.
	// * Redistributions in binary form must reproduce the above
	// copyright notice, this list of conditions and the following disclaimer
	// in the documentation and/or other materials provided with the
	// distribution.
	// * Neither the name of Google Inc. nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
	// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
	// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
	// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
	// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
	// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
	// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	//
	// Authors: wan@google.com (Zhanyong Wan), eefacm@gmail.com (Sean Mcafee)
	//
	// The Google C++ Testing Framework (Google Test)
	//
	// This header file defines internal utilities needed for implementing
	// death tests. They are subject to change without notice.

	#ifndef GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_
	#define GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_

	#include "gtest/internal/gtest-internal.h"

	#include <stdio.h>

	namespace testing {
	namespace internal {

	GTEST_DECLARE_string_(internal_run_death_test);

	// Names of the flags (needed for parsing Google Test flags).
	const char kDeathTestStyleFlag[] = "death_test_style";
	const char kDeathTestUseFork[] = "death_test_use_fork";
	const char kInternalRunDeathTestFlag[] = "internal_run_death_test";

	#if GTEST_HAS_DEATH_TEST

	// DeathTest is a class that hides much of the complexity of the
	// GTEST_DEATH_TEST_ macro. It is abstract; its static Create method
	// returns a concrete class that depends on the prevailing death test
	// style, as defined by the --gtest_death_test_style and/or
	// --gtest_internal_run_death_test flags.

	// In describing the results of death tests, these terms are used with
	// the corresponding definitions:
	//
	// exit status: The integer exit information in the format specified
	// by wait(2)
	// exit code: The integer code passed to exit(3), _exit(2), or
	// returned from main()
	class GTEST_API_ DeathTest {
	public:
	// Create returns false if there was an error determining the
	// appropriate action to take for the current death test; for example,
	// if the gtest_death_test_style flag is set to an invalid value.
	// The LastMessage method will return a more detailed message in that
	// case. Otherwise, the DeathTest pointer pointed to by the "test"
	// argument is set. If the death test should be skipped, the pointer
	// is set to NULL; otherwise, it is set to the address of a new concrete
	// DeathTest object that controls the execution of the current test.
	static bool Create(const char* statement, const RE* regex,
	const char* file, int line, DeathTest** test);
	DeathTest();
	virtual ~DeathTest() { }

	// A helper class that aborts a death test when it's deleted.
	class ReturnSentinel {
	public:
	explicit ReturnSentinel(DeathTest* test) : test_(test) { }
	~ReturnSentinel() { test_->Abort(TEST_ENCOUNTERED_RETURN_STATEMENT); }
	private:
	DeathTest* const test_;
	GTEST_DISALLOW_COPY_AND_ASSIGN_(ReturnSentinel);
	} GTEST_ATTRIBUTE_UNUSED_;

	// An enumeration of possible roles that may be taken when a death
	// test is encountered. EXECUTE means that the death test logic should
	// be executed immediately. OVERSEE means that the program should prepare
	// the appropriate environment for a child process to execute the death
	// test, then wait for it to complete.
	enum TestRole { OVERSEE_TEST, EXECUTE_TEST };

	// An enumeration of the three reasons that a test might be aborted.
	enum AbortReason {
	TEST_ENCOUNTERED_RETURN_STATEMENT,
	TEST_THREW_EXCEPTION,
	TEST_DID_NOT_DIE
	};

	// Assumes one of the above roles.
	virtual TestRole AssumeRole() = 0;

	// Waits for the death test to finish and returns its status.
	virtual int Wait() = 0;

	// Returns true if the death test passed; that is, the test process
	// exited during the test, its exit status matches a user-supplied
	// predicate, and its stderr output matches a user-supplied regular
	// expression.
	// The user-supplied predicate may be a macro expression rather
	// than a function pointer or functor, or else Wait and Passed could
	// be combined.
	virtual bool Passed(bool exit_status_ok) = 0;

	// Signals that the death test did not die as expected.
	virtual void Abort(AbortReason reason) = 0;

	// Returns a human-readable outcome message regarding the outcome of
	// the last death test.
	static const char* LastMessage();

	static void set_last_death_test_message(const std::string& message);

	private:
	// A string containing a description of the outcome of the last death test.
	static std::string last_death_test_message_;

	GTEST_DISALLOW_COPY_AND_ASSIGN_(DeathTest);
	};

	// Factory interface for death tests. May be mocked out for testing.
	class DeathTestFactory {
	public:
	virtual ~DeathTestFactory() { }
	virtual bool Create(const char* statement, const RE* regex,
	const char* file, int line, DeathTest** test) = 0;
	};

	// A concrete DeathTestFactory implementation for normal use.
	class DefaultDeathTestFactory : public DeathTestFactory {
	public:
	virtual bool Create(const char* statement, const RE* regex,
	const char* file, int line, DeathTest** test);
	};

	// Returns true if exit_status describes a process that was terminated
	// by a signal, or exited normally with a nonzero exit code.
	GTEST_API_ bool ExitedUnsuccessfully(int exit_status);

	// Traps C++ exceptions escaping statement and reports them as test
	// failures. Note that trapping SEH exceptions is not implemented here.
	# if GTEST_HAS_EXCEPTIONS
	# define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
	try { \
	GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
	} catch (const ::std::exception& gtest_exception) { \
	fprintf(\
	stderr, \
	"\n%s: Caught std::exception-derived exception escaping the " \
	"death test statement. Exception message: %s\n", \
	::testing::internal::FormatFileLocation(__FILE__, __LINE__).c_str(), \
	gtest_exception.what()); \
	fflush(stderr); \
	death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
	} catch (...) { \
	death_test->Abort(::testing::internal::DeathTest::TEST_THREW_EXCEPTION); \
	}

	# else
	# define GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, death_test) \
	GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement)

	# endif

	// This macro is for implementing ASSERT_DEATH, EXPECT_DEATH,
	// ASSERT_EXIT, and EXPECT_EXIT.
	# define GTEST_DEATH_TEST_(statement, predicate, regex, fail) \
	GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
	if (::testing::internal::AlwaysTrue()) { \
	const ::testing::internal::RE& gtest_regex = (regex); \
	::testing::internal::DeathTest* gtest_dt; \
	if (!::testing::internal::DeathTest::Create(#statement, &gtest_regex, \
	__FILE__, __LINE__, &gtest_dt)) { \
	goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
	} \
	if (gtest_dt != NULL) { \
	::testing::internal::scoped_ptr< ::testing::internal::DeathTest> \
	gtest_dt_ptr(gtest_dt); \
	switch (gtest_dt->AssumeRole()) { \
	case ::testing::internal::DeathTest::OVERSEE_TEST: \
	if (!gtest_dt->Passed(predicate(gtest_dt->Wait()))) { \
	goto GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__); \
	} \
	break; \
	case ::testing::internal::DeathTest::EXECUTE_TEST: { \
	::testing::internal::DeathTest::ReturnSentinel \
	gtest_sentinel(gtest_dt); \
	GTEST_EXECUTE_DEATH_TEST_STATEMENT_(statement, gtest_dt); \
	gtest_dt->Abort(::testing::internal::DeathTest::TEST_DID_NOT_DIE); \
	break; \
	} \
	default: \
	break; \
	} \
	} \
	} else \
	GTEST_CONCAT_TOKEN_(gtest_label_, __LINE__): \
	fail(::testing::internal::DeathTest::LastMessage())
	// The symbol "fail" here expands to something into which a message
	// can be streamed.

	// This macro is for implementing ASSERT/EXPECT_DEBUG_DEATH when compiled in
	// NDEBUG mode. In this case we need the statements to be executed, the regex is
	// ignored, and the macro must accept a streamed message even though the message
	// is never printed.
	# define GTEST_EXECUTE_STATEMENT_(statement, regex) \
	GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
	if (::testing::internal::AlwaysTrue()) { \
	GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
	} else \
	::testing::Message()

	// A class representing the parsed contents of the
	// --gtest_internal_run_death_test flag, as it existed when
	// RUN_ALL_TESTS was called.
	class InternalRunDeathTestFlag {
	public:
	InternalRunDeathTestFlag(const std::string& a_file,
	int a_line,
	int an_index,
	int a_write_fd)
	: file_(a_file), line_(a_line), index_(an_index),
	write_fd_(a_write_fd) {}

	~InternalRunDeathTestFlag() {
	if (write_fd_ >= 0)
	posix::Close(write_fd_);
	}

	const std::string& file() const { return file_; }
	int line() const { return line_; }
	int index() const { return index_; }
	int write_fd() const { return write_fd_; }

	private:
	std::string file_;
	int line_;
	int index_;
	int write_fd_;

	GTEST_DISALLOW_COPY_AND_ASSIGN_(InternalRunDeathTestFlag);
	};

	// Returns a newly created InternalRunDeathTestFlag object with fields
	// initialized from the GTEST_FLAG(internal_run_death_test) flag if
	// the flag is specified; otherwise returns NULL.
	InternalRunDeathTestFlag* ParseInternalRunDeathTestFlag();

	#else // GTEST_HAS_DEATH_TEST

	// This macro is used for implementing macros such as
	// EXPECT_DEATH_IF_SUPPORTED and ASSERT_DEATH_IF_SUPPORTED on systems where
	// death tests are not supported. Those macros must compile on such systems
	// iff EXPECT_DEATH and ASSERT_DEATH compile with the same parameters on
	// systems that support death tests. This allows one to write such a macro
	// on a system that does not support death tests and be sure that it will
	// compile on a death-test supporting system.
	//
	// Parameters:
	// statement - A statement that a macro such as EXPECT_DEATH would test
	// for program termination. This macro has to make sure this
	// statement is compiled but not executed, to ensure that
	// EXPECT_DEATH_IF_SUPPORTED compiles with a certain
	// parameter iff EXPECT_DEATH compiles with it.
	// regex - A regex that a macro such as EXPECT_DEATH would use to test
	// the output of statement. This parameter has to be
	// compiled but not evaluated by this macro, to ensure that
	// this macro only accepts expressions that a macro such as
	// EXPECT_DEATH would accept.
	// terminator - Must be an empty statement for EXPECT_DEATH_IF_SUPPORTED
	// and a return statement for ASSERT_DEATH_IF_SUPPORTED.
	// This ensures that ASSERT_DEATH_IF_SUPPORTED will not
	// compile inside functions where ASSERT_DEATH doesn't
	// compile.
	//
	// The branch that has an always false condition is used to ensure that
	// statement and regex are compiled (and thus syntactically correct) but
	// never executed. The unreachable code macro protects the terminator
	// statement from generating an 'unreachable code' warning in case
	// statement unconditionally returns or throws. The Message constructor at
	// the end allows the syntax of streaming additional messages into the
	// macro, for compilational compatibility with EXPECT_DEATH/ASSERT_DEATH.
	# define GTEST_UNSUPPORTED_DEATH_TEST_(statement, regex, terminator) \
	GTEST_AMBIGUOUS_ELSE_BLOCKER_ \
	if (::testing::internal::AlwaysTrue()) { \
	GTEST_LOG_(WARNING) \
	<< "Death tests are not supported on this platform.\n" \
	<< "Statement '" #statement "' cannot be verified."; \
	} else if (::testing::internal::AlwaysFalse()) { \
	::testing::internal::RE::PartialMatch(".*", (regex)); \
	GTEST_SUPPRESS_UNREACHABLE_CODE_WARNING_BELOW_(statement); \
	terminator; \
	} else \
	::testing::Message()

	#endif // GTEST_HAS_DEATH_TEST

	} // namespace internal
	} // namespace testing

	#endif // GTEST_INCLUDE_GTEST_INTERNAL_GTEST_DEATH_TEST_INTERNAL_H_